<script type="text/javascript">

    $(document).ready(function() {

		/**
		* Required for Django's CSRF protection when using AJAX
		* Taken from here - http://docs.djangoproject.com/en/dev/ref/contrib/csrf/
		 */

		$(document).ajaxSend(function(event, xhr, settings) {
		    function getCookie(name) {
		        var cookieValue = null;
		        if (document.cookie && document.cookie != '') {
		            var cookies = document.cookie.split(';');
		            for (var i = 0; i < cookies.length; i++) {
		                var cookie = jQuery.trim(cookies[i]);
		                // Does this cookie string begin with the name we want?
		                if (cookie.substring(0, name.length + 1) == (name + '=')) {
		                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
		                    break;
		                }
		            }
		        }
		        return cookieValue;
		    }
		    function sameOrigin(url) {
		        // url could be relative or scheme relative or absolute
		        var host = document.location.host; // host + port
		        var protocol = document.location.protocol;
		        var sr_origin = '//' + host;
		        var origin = protocol + sr_origin;
		        // Allow absolute or scheme relative URLs to same origin
		        return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
		            (url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
		            // or any other URL that isn't scheme relative or absolute i.e relative.
		            !(/^(\/\/|http:|https:).*/.test(url));
		    }
		    function safeMethod(method) {
		        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
		    }

		    if (!safeMethod(settings.type) && sameOrigin(settings.url)) {
		        xhr.setRequestHeader("X-CSRFToken", getCookie('csrftoken'));
		    }
		});

		var generate_country_states = function(args) {
			$(":input[name=country]").change(function() {
				var data = {};
				data["country"] = $(this).val();

                $.ajax({
                    type: "POST",
                    url: "{% url 'populate-states' %}",
                    data: data,
                    success: function(data) {
                        if ( !data )
                            return;
                        else {
                           $(":input[name=state]").html(data) 
                        }
                    },
                    error: function(data) {
                        console.error("Ajax error"); 
                    },
                    dataType: "html"
                })
			})
	    };

		generate_country_states();

        var generate_state_municipals = function(args) {
            $(":input[name=state]").change(function() {
                var data = {};
                data["country"] = $(":input[name=country]").val();
                data["state"] = $(this).val();

                $.ajax({
                    type: "POST",
                    url: "{% url 'populate-municipals' %}",
                    data: data,
                    success: function(data) {
                        if ( !data )
                            return;
                        else {
                            $(":input[name=municipal]").html(data)
                        }
                    },
                    error: function(data) {
                        console.error("Ajax error in municipals");
                    },
                    dataType: "html"
                })
            })
        };

        generate_state_municipals();
	});

</script>
